Question

I got some of them but the blank ones i cant seem to find. Thank you!

(a) Estimate the area under the graph of f(x) = 4 + 4x² from x = −1 to x = 2 using three rectangles and right endpoints

R3=32

R6=

.(b) Repeat part a using left endpoints

L3= 20

L6= 43/2

(c) Repeat part a using midpoints

M3=

M6=